Sometimes your mesh appears to be under the limit, but you still trigger the error due to: Your product license has numerical problem size limits…..
Split the geometry in or Discovery (e.g., into a half or quarter model).
Are you currently working on a or fluids project, and do you know your current node count ?
Ensure you are using the Research license provided by your university, not the Student download.
A: Yes – 32,000 nodes/elements. The message appears identically.
The most common cause of this error is inadvertently using a license to run a solver. Pre-Post licenses are cheaper and intended only for setup and post-processing; they have strict limits on problem size (often around 500k cells/nodes) if used to solve.